WO2009050841A1 - Focusing measurement device, focusing measurement method, and program - Google Patents

Focusing measurement device, focusing measurement method, and program Download PDF

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Publication number
WO2009050841A1
WO2009050841A1 PCT/JP2008/002298 JP2008002298W WO2009050841A1 WO 2009050841 A1 WO2009050841 A1 WO 2009050841A1 JP 2008002298 W JP2008002298 W JP 2008002298W WO 2009050841 A1 WO2009050841 A1 WO 2009050841A1
Authority
WO
WIPO (PCT)
Prior art keywords
images
focusing
focusing measurement
section
program
Prior art date
Application number
PCT/JP2008/002298
Other languages
French (fr)
Japanese (ja)
Inventor
Tsukasa Murata
Original Assignee
Nikon Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007270197A external-priority patent/JP5115138B2/en
Priority claimed from JP2007270196A external-priority patent/JP5003406B2/en
Application filed by Nikon Corporation filed Critical Nikon Corporation
Priority to US12/669,934 priority Critical patent/US8558942B2/en
Publication of WO2009050841A1 publication Critical patent/WO2009050841A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00—Still video cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • H04N23/633—Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera

Abstract

A focusing measurement device comprises an image input section for acquiring captured images, a filter section for generating blurring images by using a pair of filters having different frequency characteristics to the images, an extraction section for extracting first and second respective feature amounts from the images and their respective blurring images in a specific point of the images, and a focusing measurement section for calculating a focusing amount indicating the degree of being in focus from the first and second feature amounts and measuring the focusing level in the specific point of the images.
PCT/JP2008/002298 2007-10-17 2008-08-25 Focusing measurement device, focusing measurement method, and program WO2009050841A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/669,934 US8558942B2 (en) 2007-10-17 2008-08-25 Focusing measurement device, focusing measurement method, and program

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007270197A JP5115138B2 (en) 2007-10-17 2007-10-17 Focus measurement device, focus measurement method and program
JP2007-270197 2007-10-17
JP2007-270196 2007-10-17
JP2007270196A JP5003406B2 (en) 2007-10-17 2007-10-17 Focus measurement device, focus measurement method and program

Publications (1)

Publication Number Publication Date
WO2009050841A1 true WO2009050841A1 (en) 2009-04-23

Family

ID=40567132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/002298 WO2009050841A1 (en) 2007-10-17 2008-08-25 Focusing measurement device, focusing measurement method, and program

Country Status (2)

Country Link
US (1) US8558942B2 (en)
WO (1) WO2009050841A1 (en)

Families Citing this family (9)

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US8983176B2 (en) 2013-01-02 2015-03-17 International Business Machines Corporation Image selection and masking using imported depth information
JP6102602B2 (en) 2013-07-23 2017-03-29 ソニー株式会社 Image processing apparatus, image processing method, image processing program, and imaging apparatus
US9183620B2 (en) 2013-11-21 2015-11-10 International Business Machines Corporation Automated tilt and shift optimization
US9449234B2 (en) 2014-03-31 2016-09-20 International Business Machines Corporation Displaying relative motion of objects in an image
US9196027B2 (en) 2014-03-31 2015-11-24 International Business Machines Corporation Automatic focus stacking of captured images
US9300857B2 (en) 2014-04-09 2016-03-29 International Business Machines Corporation Real-time sharpening of raw digital images
CN106686313B (en) * 2017-01-18 2020-03-27 Oppo广东移动通信有限公司 Control method, control device and electronic device
JP7160042B2 (en) * 2017-09-08 2022-10-25 ソニーグループ株式会社 Image processing device, image processing method and image processing program
CN117041531B (en) * 2023-09-04 2024-03-15 无锡维凯科技有限公司 Mobile phone camera focusing detection method and system based on image quality evaluation

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JPH05207352A (en) * 1992-01-24 1993-08-13 Olympus Optical Co Ltd Focusing detector
JP2001331806A (en) * 2000-05-22 2001-11-30 Nec Corp Image processing system
JP2001352440A (en) * 2000-06-07 2001-12-21 Olympus Optical Co Ltd Image processing unit
JP2006135523A (en) * 2004-11-04 2006-05-25 Toshiba Corp Device, method, and program for judging image condition
JP2007088913A (en) * 2005-09-22 2007-04-05 Konica Minolta Holdings Inc Imaging device
JP2007128009A (en) * 2005-11-07 2007-05-24 Research Organization Of Information & Systems Imaging device and imaging method using out-of-focus structure
JP2007181184A (en) * 2005-12-02 2007-07-12 Sony Corp Imaging apparatus and method, and method for designing imaging apparatus
JP2008039611A (en) * 2006-08-07 2008-02-21 Canon Inc Device and method for measuring position and attitude, compound real feeling presentation system, computer program and storage medium

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US6654061B2 (en) * 1995-06-14 2003-11-25 Canon Kabushiki Kaisha Automatic focus adjusting apparatus and method utilized by an image sensing apparatus
JPH09322057A (en) * 1996-05-28 1997-12-12 Canon Inc Image pickup device
JP3840725B2 (en) 1997-01-30 2006-11-01 ソニー株式会社 Autofocus device for video camera
JPH10221594A (en) 1997-02-05 1998-08-21 Sony Corp Automatic focus device
JP3530907B2 (en) * 2002-01-31 2004-05-24 ミノルタ株式会社 Digital camera
JP4647885B2 (en) * 2003-02-17 2011-03-09 株式会社ニコン camera
JP4245185B2 (en) * 2005-02-07 2009-03-25 パナソニック株式会社 Imaging device
US7443590B2 (en) * 2005-12-02 2008-10-28 Sony Corporation Imaging apparatus and method, and method for designing imaging apparatus
JP4943769B2 (en) * 2006-08-15 2012-05-30 富士フイルム株式会社 Imaging apparatus and in-focus position search method
US7911513B2 (en) * 2007-04-20 2011-03-22 General Instrument Corporation Simulating short depth of field to maximize privacy in videotelephony
JP5006727B2 (en) * 2007-07-26 2012-08-22 株式会社リコー Image processing apparatus and digital camera

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05207352A (en) * 1992-01-24 1993-08-13 Olympus Optical Co Ltd Focusing detector
JP2001331806A (en) * 2000-05-22 2001-11-30 Nec Corp Image processing system
JP2001352440A (en) * 2000-06-07 2001-12-21 Olympus Optical Co Ltd Image processing unit
JP2006135523A (en) * 2004-11-04 2006-05-25 Toshiba Corp Device, method, and program for judging image condition
JP2007088913A (en) * 2005-09-22 2007-04-05 Konica Minolta Holdings Inc Imaging device
JP2007128009A (en) * 2005-11-07 2007-05-24 Research Organization Of Information & Systems Imaging device and imaging method using out-of-focus structure
JP2007181184A (en) * 2005-12-02 2007-07-12 Sony Corp Imaging apparatus and method, and method for designing imaging apparatus
JP2008039611A (en) * 2006-08-07 2008-02-21 Canon Inc Device and method for measuring position and attitude, compound real feeling presentation system, computer program and storage medium

Also Published As

Publication number Publication date
US8558942B2 (en) 2013-10-15
US20100182495A1 (en) 2010-07-22

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